Fast environment switcher for web developers, via bookmarklet.

env-switcher.js

/**
 * @file: Environment switcher bookmarklet (source)
 *
 * @usage: @TODO
 * Notes:
 * - Generate bookmarklet using: http://ted.mielczarek.org/code/mozilla/bookmarklet.html
 */
var curLoc = new String(window.location.href);
var newLoc = '';
 
// Prefixes for each environment
var prodPrefix = 'www.acme.com/subdir';
var qaPrefix = 'www.qa.acme.com/subdir';
var devPrefix = 'localhost:8000';
 
// env object relating each env key with its default config
var envs = {
  'prod': {
    'curPrefix': prodPrefix,
    'destPrefix': 'dev' //devPrefix
  },
  'qa': {
    'curPrefix': qaPrefix,
    'destPrefix': 'dev' //devPrefix
  },
  'dev': {
    'curPrefix': devPrefix,
    'destPrefix': 'prod' //prodPrefix
  }
};
// Shortcuts: key is shortcut, value is key on envs object.
var shortcuts = {
  'p': 'prod',
  'q': 'qa',
  'd': 'dev'
};
// Determine current env and default destination for redirection
for (env in envs) {
  if (curLoc.indexOf(envs[env].curPrefix) > -1) {
    var curPrefix = envs[env].curPrefix;
    var defaultDestPrefix = envs[env].destPrefix;
  }
}
// Allow user to override the default
var destPrefix = prompt('Enter destination environment (prod, qa, dev)', defaultDestPrefix);
// Try to expand shortcut
if (shortcuts.hasOwnProperty(destPrefix)) {
  destPrefix = shortcuts[destPrefix];
}
// Generate newLoc
if (envs.hasOwnProperty(destPrefix)) {
  newLoc = curLoc.replace(curPrefix, envs[destPrefix].curPrefix);
}
// Browse to newLoc
if (newLoc !== curLoc && newLoc.length > 0) {
  window.location = newLoc;
}